Numrical Simulation on Electric Field of Galvanic Corrosion for U-Nb Alloy and 45-Steel

Abstract:

Based on the galvanic corrosion experiment for U-Nb alloy and 45-steel in the 3.5 mass percent NaCl solutions, the galvanic corrosion electric field has been calculated by finite element method. The electric potential and the current density evolution during galvanic corrosion have been obtained. The results show that the electric potential drop between cathode and anode had obvious difference. The electric potential drop in the U-Nb alloy cathode is higher than that in the 45-steel anode, which makes the electric field in the U-Nb alloy higher than that in the 45-steel. A rather high current density exists at the ends and corners of the specimen. The permittivity of the corrosion medium only has a little effect on the corrosion electric potential, but has obvious effects on the corrosion current density. The electrode size has obvious effects on the corrosion electric potential and current density.

• Periodical: Materials Science Forum (Volume 749)
• Pages: 556-560
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.749.556
• Online since: March 2013
• Authors: Ping Dong, Zhen Pu, Mao Bin Shuai
• Keywords: Electric Field, Finite Element Method (FEM), Galvanic Corrosion, U-Nb Alloy

References

[1] Xiong Bitao, Meng Daqiao, Yang Weicai. Atomic Energy Science and Technology, 39(2005)226-231.

[2] Dong Ping, Li Ruiwen, Jiang Fan. Rare Metal Materials and Engineering, 35(2006)885-889.

[3] Winkel J R, Childs E L. Rockwell international report, RFP-3486, (1983).

[4] Wang Qingfu, Xian Xiaobin, Liu Qinghe. Atomic Energy Science and Technology, 40(2006)662-666.

[5] Wang Qingfu, Liu Qinghe, Wang Xiaohong. Rare Metal Materials and Engineering, 37(2008)289-293.

[6] Kiran B. Deshpande. Corrosion Science, 52(2010)3514-3522.

[7] Kiran B. Deshpane. Corrosion Science, 52(2010)2819-2826.

[8] Du Yanxia, Zhang Guozhong, Li Jian. Journal of Chinese Society for Corrosion and Protection, 28(2008)53-58.